题目链接：Deep-ML

import numpy as np
def linear_regression_normal_equation(X: list[list[float]], y: list[float]) -> list[float]:
    X = np.array(X)
    y = np.array(y).reshape(-1, 1)
    x_transpose = X.T
    theta = np.linalg.inv(x_transpose.dot(X)).dot(x_transpose).dot(y)
    theta = np.round(theta, 4).flatten().tolist()
    return theta